Type-writing machine.



' Noi 848,649.- PATENTED APR. 2, 1907.

W. I. HELMUND. TYPE WRITING MACHINE.

APPLICATION FILED DEO. 28, 1906.

Illl

ofuided in radially-s Lorwardly and rearwardly.

WlLLlAM F. HEMOND, OF HARTFQRD, COB.

ncricur, aerei-ron fro UNDERTODD TYPEWRTER COMPANY, F N 1W' YORK, N. Y., A CGR- PORATION F NEW JERSEY.

no. ceases.

Speeication of Letters Patent.

naci-uns.

Patented April 2, 1907.

To a/ZZ Zeh/ont iz; may con/cenit:

Be it known that l, VILLLM@ F. HELMOND,

a citizen oi' the United States, residing in' Hartford, in the county of Hartford and State of Connecticut, have invented certain specification.

',llns invention relates to type-writ1ng niachines in which type-bars are pivoted and otted segments to strike The type-bareguidingslots are usually cut .un the periphery of the cast-iron segment,

ch is usually very much thickened at the.

slottedportion in order to afford extensive side bearings for the typebars. The segments are usually rnade ol cast-iron 'and the slots are 'usually cut by means of revolving saws, and it has been found in practice that the operation of sawing the slots causes the segments to spring out or shape. ln such machines it is found necessary for the type-l bars to rit very accurately indeed in the slots 5 but owing to the variations in the slot-open ings, due to the springing of the segment aforesaid, it is found that the type-bars if all nished alike will not iit properly in the slots, as the latter vary in Width in an ungoverir able manner. lt therefore becomes necessary to iit the type-bars individually to the slots,whichrequires highlyusliilled labor and involves great expense.

One of the objects ol` rny invention is to minimize or eliminate the springing of the ment, to the end that the stops may be more even in the completed segment and the iittin g of typebars thereto rendered less expensive.

My invention although. adapted for certain other machines is especially'intended for use on the Underwood type-Writer machine andV is illustrated inA connection with Wellknown parts ol' said machine. Heretoi'ore the Underwood segment has not only been thickened at the slotted portion, as already explained, but has also been formed above the slots with a rib projecting from the iront face and serving as an arivil for the type-bars to strike against Vneantheir hub portions, and thereby to secure nieety of their type iinv pressions en the paper. The type-bars have `ieen cranked around said slotted portion the segment in order to enable them te corr tact with said rib or anvil. This cranking is objectionable, in that' it tends to reduce the torsion-resisting quality of the bar. i thicken the segment not only at the slotted portion thereof, but also up to and includinef` the anvil portion thereof. In other Words, provide around the periphery of thc segment a single broad thick rib. A large portion of this rib` is uncut, so that ,it forms a solid body capable oit withstanding the stress set up in the inodels by action of the slot-guiding saws, and hence the spring of t'lie segment is largely reduced or eliminated and the slots do not change by reason of the springing of the segment, as heretofore. Moreover, cranking of the type-bar is avoided, since each Atype-bar when in printing position after emerging from the slot extends directly up the iront side oiA the rib and contacts with the paper edge thereof which corresponds to the anvil heretofore implied and from said anvil extends forwardly and rearwardly to the type-bar ends. The objectionable cranking heretofore referred to at the hub of the type ybar is avoided and better type impressions are attained, niore particularly in the case of the type-bars at the sides of the system. Said rib forms the larger portion of the bulli of the segment, and owing to the slots being cut Wholly on its under side no liability is experienced of the entrance of dust and dirt into the slots. Heretoiiore in said machine a curved slot has been formed in the rear face of the segment, and this slot has been occupied by a cum-ed universal bar. One of the features of niy impr yeinents consists in eliminating said slot, thus leaving the rear lace ci the segment lane,` (except for the slot which receives tie type-bar iulcruni-1 llo ing from' the platen, while a broader or deeper bearing is alforded for the type-bars, so that the liability oi the. ,twisting of the latter is minimized.

Other features and advantages will hereinafter appear.

ln the accom .ianying drawings, Figure is a sectional si e elevation of the portion of .an Underwood type-writing niac'nine ,pro vided with myliniproveinents, the type-bar being shown in printing pesitiorr l? fr 2 is a trent elevation, and Fig. a rear etere-tion,

p ci thetype# ai: segment.

.IOC

Springy `type-bers 1 'are slots 2 1n an upright segment 3 and hung upon-9d curved'fulcrurn-wireei to strike reerwerdly against the front side of a! platen 5.

The segment, which is of cast-iron, 1s formed-- along 1ts lower or outer edge with 'e broad rib or thickened portion 6, projecting from the front face of the segment, e type-guide 7 of theusuel construction beingsee'ured upon the front of the segment above seid rib.

The guiding-slots 2 are cutaentirely through the rib 6 from front to rear. The type-bars strike upon the upper edge or border of seid dwhich can be readily rib, theirl upper portions. springing reim Wardly to strike the' pieten-in admow-n mim n'er; Preferably the anvil'portion of the rib hess` e slightly.- raised f segmentalv surface 8, nished ortruediup for the-typebers to strike upon,l end the letter may, iffdesired, have' projections 9it`o' strike y'upon the anvil.v

Eachxtype-ber when in printing position extends forwardly and'. u werdl frpm the pivotflito s, pointe little m-,the rontof 'the'- ribend extends thence directly upward with .sfslight .rearward inclinetionto itsl typecerryindg end, asLseen et 1', the types being esigneted' esv 10. rldhis form of ber possesses greetrigidity and may be depended upon to produce clear impressions and will stand.' herderr Ause than 'the cranked bars already referredto. v

From the lower renrportion of the segment extends e s'egmentllange 11, slopiner downwardly andjreerwerdly, both to stiiien the segment, end to prevent drop ings from the platen entering the slots on t e rearside-o thesegment, said rib 11 projecting rearwerdly over the portions 12 of the type-bar hubs Whichproject rearwardly from the segment.- The slots et their uilper ends may front 'of the rib, es et 13, and

to give the type-bers e more extensive sup,

port-'from front to rear, end for the same pur-i the rib 6 may be mede thicker below the e 11, `asillustruted et 6*?. The reel' fece 6*? 0' the rib 6 is preferably plane and verticel,

with-)the exception of. thecurved slot 1 5;

` which is occup1ed by the "ivot-wi1'e 4;

The universelban16, orming pert'ofA the cerriege-feeding and .ribbon-'operating mech anism, lies normally against the neer feos 6^" of the segment and is pressed rearwardly by heeis? formed on the type-hers and projecting heel; from seid fece 6 when the typebnrs are in printingpositions, es et Fig. 1.

' plane and vertical rom'the guided in radin] 'rhefmntface'oftherib e is @presti-indy topl of the anvil .portion thereof tothe top ofthe slot porrtion thereof. i

The type-bars are operatednby the "usual belllcrenks or levers V18, having pinsv 19 detechebly. engaged to long slotsZO, which are formed in the lowene'ndsofthe`A bers nearly radial to the fulcrum-wire 4. Seid 'slot 20 terminatesetvits-u er end,`Fi'g..1', in e short slot 21, which directly engages the fulcrurnwire4- The slot 21 isfcut substaw tially concentric 'withv the type or' with the point'22-atrwhichthe types strikethe platen, so that if by reason of faulty: notion of the type-ber itfmoves'reerwsrdly at its hub port1on while the type is moving to the printingpoint the t e will still println. ellner ent, since the hgh) canfswingvback the'lengt Aof the slot 21 without disturbing `theelinenient ,fier longitudinell position ofzithelftype b`er. ,2 t will be seen that the upper vsind loweredges .efthe'slot21' are eutu'p'on the varcs 23 en 'dQ/l,

thet peflierr ere Opern es at 25, for-redy de tec 1ent`from'thelw1re4; 1

Having:- thusdescribed'l my, invention, I cleim-e 'l from its front farceedging` lts lower` edge,- Ithe ty e-ber-guiding slotsv being cut; through on y the underside of seid'rib', the top oi 'se rib being .broe'd end-unslotted, end't bars oonstruetedxtostrike rearwardly 4ngftil'z.,

segmenthsvingradiel guiding-slots in which the typevbers erehungonn curved pivotwir'e, seid@ 'segment being 'formed with n,

only. the upper edge or border ofss1d.ri-b, t o

permit the types to spring tothepl fitenfg` e Ine` type-Writing. machine, the co'inlji nation withfa set of-:type-bers, ol' en upright broad -rib or thickened portion projeetingff from its front. ieee elongate lower edge,.the i on ythe undersidevoseidrib, the to yoltseid 'tyebanguiding slots being cutl through `1.1 a' rib bein'gbroeld end un'slotted, end't G type` hers constructedto strike rearwardly against only the upper edge or border of'jsaidcrib, Vto,`

permit the types to spring to, thejpleten, the

type-bers lbeingr formed with projections'` to contact with the rib.. t

In a. type-writing meclnne, the comln- `nation withe. setioftypefbers, of en upright;`

` guiding-slots lnwhiohw "1.2.5 lwire; seid segx'ne'ntr being formed with f portion prmectinjg trom its h'o'ntffeco' along its `lower edge,,the

segment he'vin'gredie thertypediers erehung, on e. curved pivote ./broed rib or thickened,l

type-ber-guiding slots being* cutthrolglllonl "L being broad and unslotted, and the typc-bars constructed to strike rearwardly against only the upper edge or border of said rib, to

` l.permit the types to spring to the platen, the

type-bars forined with. projections to Contact 'with the rib, and the latter having a slightly.

raised surface to be struck by said projections. 4, In a typeavriting machine, the combination with a set of rearwardly-striking ty eL bars, of' an upright segment having ra ial -guiding-slots 1n which the type-bars arehung on a curved pivot-wire; said segment being formed with a broad rib or thickened i portionprojecting freni its "front ane. along its lower edge', the type-bar-guidiflg slots being cut through only the under side f said rib leavingia broad portion of the rib above the stop, each tu e-bariwhen in printing poL sition extending orwardly from its' pivot to clear said rib, and thence straight upward with-a slight rearward inclination toits typecarrying end, and constructed to strike rearl 'w`ardly, at a point wellabove the slot, against only the upper edge or border of said rib.

5. ln a typewriting machine, the combination with a set of rearwardly-striking type- .bars, ol' an upright segment having radial guiding-slots in which the ty e-bars are hung on a curved pivot-wire; sai segment being formed with a broad rib or thickened portion projec/ti/ng'l'rorn its l'rontface along` its lower edge, the typabanguiding slots being cut through only the under side of said rib leaving a broad portion ol the rib above the stop, each type-bar when 1n printing pos1t1on exsaid rib, and. thence straight upward with a slight rearward inclination to its type-carrying end, and constructed to strike rearwardly, at a point well above the slot, against only y the upper edge or border of said rib; said segment having projecting from its rear formed with a broad rilror thickened portion projecting from' its front face along its lower edffe the ty )e-baruidinf slots bein(r out t I l:

through the lower portion of said rib, and the type-barsconstruoted to strike upon the upper edge or border of said rib, each 'type-bar when in printing position extending forwardly from its pivot to clear said rib, and thence directly upward with a slight rearward inclination to type-carrying end; said seg-v ment having projectingrorn its rear lower portion a segmental flange extending back ltending forwardly from its pivot to clear over portions of the type-bar hubs which project rearwardly from the segment;l a curved universal bar directly` in rear of the segment and below the flange and operable by heels on the typeebars, which are constructed to pro ject rearwardly from the rear face of the seg.- ment when the type-bars are inprinting po- .sition; said segment having on its rear face below said flange a singlecurved recess, and said pivot-wire occupying said recess.

7. ln a type-writing'1nachine,' the combination with a set of rearwardly-striking t ebars, of an upright segment having ra ial guiding-slots in w ich the type-bars are hung on a curved pivot-wire; said segment being formed with a broad rib or thickened portion projecting from its front face along its lower edge, the type-bar-guiding slots being cnt through the lower portion of said rib, and the type-bars constructed. to strike upon the upJ per edge or border of said rib, each type-bar when in printing position extending forwardly from its pivot to clear said rib, and thence directly upward with a slight rearward inclination to its type-carrying end; said segnient having projecting from its rear lower j portion a segmental flange extending back over portions of the ty ebar hubs which proj ect rearwardly from t e segment; the type* bar guiding slots extending through the lower ,portion of said flange, thence upwardly and forwardly through the front of the rib, K

and the ty e-bars having at their hub ends a correspon ing upward. and forward inclination.

.8. Ina type-writing machine, the combination with a set of rearwardly-striking ty e bars, of an uprigrit segment having racial gniding-slots in which the type-bars are hung on a curved pivot-wire; said segment being formed with a broad rib or thickened portion projecting from its -iront iace along its lower edge, the type-barguiding slots being cut through the lower portion of said rib, and the type-bars constructed to strike upon the up- IOO per edge or border or' said rib, each type-bar when in printing position extending forwardly from its pivot to clear said rib,y and. thence directly upward with a slight rearward inclination to its type-carrying end; said seginen' having projecting frein its rear lower portion a segmental flange extending back over poi tions of the type-bar hubs which project rearwardly from the segment; the typeebar-guhb ing slots extending through the lower portion 'of said. flange, thence upwardly and forwardly through the front of the rib, and the typeA bars having at their' hub ends a corresponding .upward and forward inclination, the liront iacefb said rib being approximately vertical troni the top or" the anvil portion to the top of the slot jmrtion'thereot.. i. 9. in a type-writing machine, the combi? nation with a segment having radial slots, of' a set. of type-carrying bars guided in the efraim-9 slots and mounted on a curved pivot-Wire, smdmounted. on a crved pivot-wire; each the type-bars having Aeach a'lo slot e11- type-bar having an open slot whereby it is gaged by ein operating-pinI and sali slot ter detaohably engaged to said pivot-Wire; ihe minatin at vits inner end 1n a short wire-en-V wire-engaging portion of the slot being cut 5 gaging s ot at an angle 13o-the long sot and substantially concentric with the type, for 5 cut substanpially concentric with the type, the purpose specified. for the purpose specified. VVILLIA F. HELMONU.

10. In ac type-writinff machine, the comb- Witnesses: nation with a, segiient lieivin@ radial slots, of EDW. J; MANNING, xo a set oftypecrrgn'mg bars guided in the slots. c EDWIN C. SMITH. 

